Merge branch 'main' into add-ephemeral-storage-size

Author: fossamagna

src/pages/[platform]/build-a-backend/auth/connect-your-frontend/sign-in/index.mdx

@@ -830,7 +830,7 @@ signInWithRedirect({ provider: {
 }})
 ```
 
-### Auto sign-in
+## Auto sign-in
 
 The `autoSignIn` API will automatically sign-in a user when it was previously enabled by the `signUp` API and after any of the following cases has completed:
 
@@ -842,6 +842,9 @@ import { autoSignIn } from 'aws-amplify/auth';
 
 await autoSignIn();
 ```
+<Callout>
+**Note**: When MFA is enabled, your users may be presented with multiple consecutive steps that require them to enter an OTP to proceed with the sign up and subsequent sign in flow. This requirement is not present when using the `USER_AUTH` flow.
+</Callout>
 
 </InlineFilter>
 <InlineFilter filters={['react-native']}

src/pages/gen1/[platform]/build-a-backend/graphqlapi/connect-machine-learning-services/index.mdx

@@ -253,6 +253,17 @@ enum PredictionsActions {
 }
 ```
 
+<Callout info>
+
+The `@predictions` directive relies on the following AWS services, which must support the region in which the AppSync API is deployed:
+
+- `identifyText` uses [Amazon Rekognition](https://docs.aws.amazon.com/general/latest/gr/rekognition.html)
+- `identifyLabels` uses [Amazon Rekognition](https://docs.aws.amazon.com/general/latest/gr/rekognition.html)
+- `convertTextToSpeech` uses [Amazon Polly](https://docs.aws.amazon.com/general/latest/gr/pol.html)
+- `translateText` uses [Amazon Translate](https://docs.aws.amazon.com/general/latest/gr/translate-service.html)
+
+</Callout>
+
 `@predictions` creates resources to communicate with Amazon Rekognition, Translate, and Polly. For each action the following is created:
 
 - IAM Policy for each service (e.g. Amazon Rekognition `detectText` Policy)